* {
    padding: 0;
    margin: 0;
}

ul  {
    list-style:none;
}

body {
    background: #000;
    color: #666;
    text-align: center;
}


audio {
    width: 450px;
    margin: 30px 0;
}

.container{
    height: 420px;
    overflow: hidden;
    /* border: 2px solid #fff; */
}


.container ul {
    /* border: 2px solid #fff; */
    transition: 1s;

}

.container li {
    height: 30px;
    line-height: 30px;
    transition: 0.2s;
}

.container li.active {
    color: #fff;
    transform: scale(1.2);   
}

